use deprecated sha module, since hashlib doesn't exist in 2.4

slave/buildslave/commands/repo.py

@@ -14,18 +14,13 @@
 # Copyright Buildbot Team Members
 
 import os
+import sha
 
 from twisted.internet import defer
 
 from buildslave.commands.base import SourceBaseCommand
 from buildslave import runprocess
 
-try:
-    from hashlib import sha1
-except ImportError:
-    import sha
-    sha1 = sha.new
-
 class Repo(SourceBaseCommand):
     """Repo specific VC operation. In addition to the arguments
     handled by SourceBaseCommand, this command reads the following keys:
@@ -160,6 +155,6 @@ def _doDownload(self, dummy):
     def parseGotRevision(self):
         command = ['manifest', '-o', '-']
         def _parse(res):
-            return sha1(self.command.stdout).hexdigest()
+            return sha.new(self.command.stdout).hexdigest()
         return self._repoCmd(command, _parse, keepStdout=True)